Earplug



FIG. 1 is a back perspective view of an earplug according to my new design,

FIG. 2 is a front perspective view thereof,

FIG. 3 is a front view thereof,

FIG. 4 is a side elevational view thereof, and with all other side views being the same; and,

FIG. 5 is a back view thereof. 

The ornamental design for an earplug, as shown and described. 